ruhr ruholla khomeini • ruhr river · · · Info · Definitions · Characters · · ruhr · · Text Latin · · Script 4 · · Length 1 · · Syllables Definitions · · · (noun) a tributary of the Rhine. Synonyms: Ruhr, Ruhr River. · · Noun Definition 1 (noun) a major industrial and coal mining region in the valley of the Ruhr river in northwestern Germany. Synonyms: Ruhr, Ruhr Valley. · · Noun Definition 2 Characters · · h latin small letter h U+0068 r latin small letter r U+0072 u latin small letter u U+0075